1213120122 has 32 divisors (see below), whose sum is σ = 2470210560. Its totient is φ = 397061040.

The previous prime is 1213120109. The next prime is 1213120123. The reversal of 1213120122 is 2210213121.

It is not an unprimeable number, because it can be changed into a prime (1213120123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452847 + ... + 455517.

It is an arithmetic number, because the mean of its divisors is an integer number (77194080).

Almost surely, 2^1213120122 is an apocalyptic number.

1213120122 is an abundant number, since it is smaller than the sum of its proper divisors (1257090438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213120122 is a wasteful number, since it uses less digits than its factorization.

1213120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4018.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1213120122 is about 34829.8739877135. The cubic root of 1213120122 is about 1066.5173759595.

Adding to 1213120122 its reverse (2210213121), we get a palindrome (3423333243).

The spelling of 1213120122 in words is "one billion, two hundred thirteen million, one hundred twenty thousand, one hundred twenty-two".